How do you play the C m7(alt)/Bb chord?

To play the C m7(alt)/Bb chord on piano, play the C m7(alt) chord (C, Eb, G#, Bb and Eb) with Bb as the lowest bass note. Place the Bb note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What is a slash chord?

A slash chord (or compound chord) is written as Chord/Bass and specifies both a chord and a bass note. The note to the right of the slash is played as the lowest note. The C m7(alt)/Bb chord means a C m7(alt) chord with Bb in the bass.

C m7(alt)/Bb

Q: What notes are in the C m7(alt)/Bb chord?

The C m7(alt)/Bb chord uses the 5 notes of the C m7(alt) chord — C (Perfect unison), Eb (Minor third), G# (Minor sixth), Bb (Minor seventh) and Eb (Minor tenth) — with Bb played as the bass note in the lowest register.

The C m7(alt) chord consists of the C (Perfect unison), Eb (Minor third), G# (Minor sixth), Bb (Minor seventh) and Eb (Minor tenth) notes, with Bb as the bass note.

Piano keyboard showing the notes for a C m7(alt)/Bb chord

How to play the C m7(alt)/Bb chord

Play Bb as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add Eb (Minor third) — 3 semitones above C
Add G# (Minor sixth) — 8 semitones above C
Add Bb (Minor seventh) — 10 semitones above C
Add Eb (Minor tenth) — 15 semitones above C
Press all 6 notes simultaneously to sound the C m7(alt)/Bb chord

Related chords with different root

C m7(#5)
C m7(alt)
Ab add2
Ab add9

Related slash chords

C m(#5)/Bb
Ab major/Bb